CTO Biomechanics & Gait Analysis Flashcards

Which phase of the gait cycle involves the foot being flat on the ground with the body weight directly over the limb?

Answer: Midstance

Midstance is the phase where the foot is flat and body weight is directly over the supporting limb.

What is the primary function of the subtalar joint during gait?

Answer: Inversion and eversion to absorb shock and adapt to terrain

The subtalar joint performs inversion and eversion to absorb shock and allow the foot to adapt to uneven terrain during gait.

In normal gait, what is the approximate stance-to-swing phase ratio?

Answer: 60% stance / 40% swing

Normal gait consists of approximately 60% stance phase and 40% swing phase per gait cycle.

Which muscle group is primarily responsible for controlling the rate of foot drop during the loading response phase?

Answer: Tibialis anterior

The tibialis anterior eccentrically contracts during loading response to control the rate at which the foot lowers to the ground.

What term describes the forward progression of the body's center of mass over the supporting foot?

Answer: Rockers of the ankle

The ankle, heel, and forefoot rockers describe the mechanisms that allow the body's center of mass to progress forward over the foot.

Which gait deviation is most commonly associated with weak hip abductors?

Answer: Trendelenburg gait

Trendelenburg gait, characterized by a drop of the pelvis toward the unsupported side, is caused by weak hip abductors.